Diego Abizaid, Developer in New York City, NY, United States
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Diego Abizaid

Verified Expert  in Engineering

Front-end Developer

New York City, NY, United States
Toptal Member Since
February 15, 2022

Diego is a front-end developer who creates beautiful, fast, and intuitive applications. At American Express, he built React and JavaScript components containing the latest accessibility and cross-browser compatibility. At IBM, he developed front-end components used by dozens of millions of pages within IBM. He enjoys positively impacting people's lives with his work. This is why he loves perfecting every line of code he writes, whether making a tool for a client or fixing bugs.


React, Next.js, JavaScript, TypeScript, CSS, Terraform
American Express
React, JavaScript, CSS, Design Systems, A11Y, Mobile Web, Emotion Library...
React, JavaScript, HTML, CSS, Front-end, Redux, Carbon, Node.js




Preferred Environment

React, JavaScript, Next.js, CSS, TypeScript, Figma, GitHub, Tailwind CSS, MacOS, Windows

The most amazing...

...tool I've created was the front-end of a stock market analytics tool called CrowTrends used worldwide.

Work Experience

Senior Front-end Developer

2021 - 2024
  • Built multiple user journey flows on the customer profile page using Next.js, including 2FA, changing credentials, and account deactivation. Added email verification steps in each flow, significantly increasing overall security for millions of users.
  • Created and maintained scalable UI components in the React library, enabling developers to insert custom authentication experiences in any user flow within the company's pages. Partnered with developer and stakeholder teams to ensure ease of adoption.
  • Developed an interface to allow users to choose alternative authentication methods such as email one-time passwords on login flows, reducing customer intake drop-off by 35% on critical business products.
  • Devised and scaffolded a TypeScript client SDK library, allowing internal developers across the company to have predictable and tested typings on our team's back-end APIs. Organized and trained a team of five developers to drive the execution of the project.
Technologies: React, Next.js, JavaScript, TypeScript, CSS, Terraform

Front-end Developer

2019 - 2021
American Express
  • Maintained the company-wide design system library, currently used by hundreds of developers to create external and internal experiences for the enterprise.
  • Built React and JavaScript reusable components containing the latest accessibility and cross-browser compatibility standards with a focus on composability and performance.
  • Collaborated with various teams and early adopters to provide support, reduce friction to adopt the library, and improve the ease of use for developers using the codebase.
Technologies: React, JavaScript, CSS, Design Systems, A11Y, Mobile Web, Emotion Library, Front-end, Figma

Lead Front-end Developer

2017 - 2019
  • Developed key pages and components of a marketing campaign automation tool using the React library.
  • Collaborated with the project architect to provided front-end guidance on codebase structure and implementation.
  • Built and maintained a CMS-like web application using React that handles the creation and maintenance of all registration forms for IBM products.
  • Developed various front-end components for the IBM design framework used by dozens of millions of pages within IBM, including all the marketing sites and IBM.com.
Technologies: React, JavaScript, HTML, CSS, Front-end, Redux, Carbon, Node.js


CrowTrends is a web app used to find out what the internet says about your favorite stocks. It compiles, analyzes, and helps you visualize the online conversation around the top equities and ETFs. The site works as a dashboard that can be used to see trends of sentiment, volume, and the price of a particular stock.

I built and designed the front-end portion of the site from the ground up by creating a custom-made design system. CrowTrends is mobile optimized, accessible, and features an intuitive and elegant design with user experience at its core.


A fully custom portfolio site used to showcase my skills and contact information. I designed and developed this project from scratch with readability, simplicity, and intuitiveness in mind. The site is fully responsive and accessible.
2013 - 2017

Bachelor's Degree in Computer Science

University of Florida - Gainesville, Florida, USA


React, Node.js, D3.js, Carbon, Emotion Library


GitHub, Google Analytics, Figma, Gulp, Terraform


Tailwind CSS, Redux, Next.js, React Native


JavaScript, HTML, CSS, TypeScript, Pug


UI Design


MacOS, Windows




Design Systems, Metadata, Accessibility, Mobile Web, Front-end, Computer Science, A11Y, Google SEO, User Authentication, Responsive UI, SVG Animation, CSS3 Animation

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